CVE-2021-33200

Fixed in a distro release EPSS <1%

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.

Published 2021-05-27 · CVE record · OSV

Products: linux_kernel, fedoraproject fedora, netapp cloud_backup, netapp solidfire_&_hci_management_node, netapp solidfire_baseboard_management_controller, netapp h300s_firmware, netapp h500s_firmware, netapp h300e_firmware, netapp h500e_firmware, netapp h700e_firmware, netapp h410s_firmware, netapp h700s_firmware

Distro releases